python实现雨滴下落到地面效果

本文实例为大家分享了python实现雨滴下落到地面效果的具体代码，供大家参考，具体内容如下

本程序在Windows 64位操作系统下，安装的是Anaconda3-4.2.0

import numpy as np import matplotlib.pyplot as plt from matplotlib import animation  # New figure with white background fig = plt.figure(figsize=(6,6), facecolor='white')  # New axis over the whole figure, no frame and a 1:1 aspect ratio ax = fig.add_axes([0, 0, 1, 1], frameon=False, aspect=1)  # Number of ring n = 50 size_min = 50 size_max = 50 ** 2  # Ring position pos = np.random.uniform(0, 1, (n,2))  # Ring colors color = np.ones((n,4)) * (0,0,0,1) # Alpha color channel geos from 0(transparent) to 1(opaque) color[:,3] = np.linspace(0, 1, n)  # Ring sizes size = np.linspace(size_min, size_max, n)  # Scatter plot scat = ax.scatter(pos[:,0], pos[:,1], s=size, lw=0.5, edgecolors=color, facecolors='None')  # Ensure limits are [0,1] and remove ticks ax.set_xlim(0, 1), ax.set_xticks([]) ax.set_ylim(0, 1), ax.set_yticks([])  def update(frame):   global pos, color, size    # Every ring is made more transparnt   color[:, 3] = np.maximum(0, color[:,3]-1.0/n)    # Each ring is made larger   size += (size_max - size_min) / n    # Reset specific ring   i = frame % 50   pos[i] = np.random.uniform(0, 1, 2)   size[i] = size_min   color[i, 3] = 1    # Update scatter object   scat.set_edgecolors(color)   scat.set_sizes(size)   scat.set_offsets(pos)    # Return the modified object   return scat,  anim = animation.FuncAnimation(fig, update, interval=10, blit=True, frames=200) plt.show() 

效果图：

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